Cita APA (7a ed.)

Hibberd, M., & Shapland, J. (1993). Violent crime in small shops. Police Foundation.

Cita Chicago Style (17a ed.)

Hibberd, Malcolm, y Joanna Shapland. Violent Crime in Small Shops. London: Police Foundation, 1993.

Cita MLA (8a ed.)

Hibberd, Malcolm, y Joanna Shapland. Violent Crime in Small Shops. Police Foundation, 1993.